Network system, path control apparatus, path control method, and non-transitory computer readable medium storing program

Abstract

An object is to provide a network system, a path control apparatus, a path control method, and a program that can realize flexible routing in a communication network. The network system according to the present invention is a network system including a base station ( 11 ), a gateway ( 12 ), and a path control apparatus ( 13 ) for controlling a communication path between the base station ( 11 ) and the gateway ( 12 ). The path control apparatus ( 13 ) is configured to perform path control on a path between the base station ( 11 ) and the gateway ( 12 ) using second identification information that is associated with first identification information for identifying a communication terminal ( 101 ) that communicates with the base station ( 11 ) and is uniquely identified inside a network system.

1 . A network system comprising:
 a base station;   a gateway; and   a path control unit that controls a communication path between the base station and the gateway, wherein   the path control unit is configured to perform path control on a path between the base station and the gateway using second identification information, and   the second identification information is associated with first identification information for identifying a communication terminal that communicates with the base station and is uniquely identified inside the network system.   
     
     
         2 . The network system according to  claim 1 , wherein
 the second identification information is associated with the first identification information and a wireless parameter between the base station and the communication terminal.   
     
     
         3 . The network system according to  claim 1 , further comprising:
 a data transfer apparatus between the base station and the gateway, wherein   the path control unit notifies the base station and the gateway of the first identification information and the second identification information and also notifies the data transfer apparatus of path control information of data to which the first identification information and the second identification information is set.   
     
     
         4 . The network system according to  claim 1 , wherein
 the base station sets the second identification information to first data that is transmitted from the communication terminal and transmits second data, to which the second identification information is set, to the gateway, and   the gateway transmits the first data, which is the second data from which the second identification information is removed, to an external apparatus that is disposed in an external network different form the network system.   
     
     
         5 . The network system according to  claim 1 , wherein
 the gateway sets the second identification information to third data that is transmitted from an external apparatus disposed in an external network different from the network system and transmits fourth data, to which the second identification information is set, to the base station, and   the base station transmits the third data, which is the fourth data from which the second identification information is removed, to the communication terminal.   
     
     
         6 . The network system according to  claim 1 , wherein
 the path control unit is configured to include a mobile control apparatus for controlling the base station and the gateway and a flow control apparatus for controlling the data transfer apparatus that is disposed between the base station and the gateway.   
     
     
         7 . The network system according to  claim 6 , further comprising:
 a serving gateway for, when incoming data that is addressed to the communication terminal is generated in a state where no wireless bearer is set between the communication terminal and the base station, holding the incoming data until the wireless bearer is set between the communication terminal and the base station, wherein   the path control unit is configured to include the serving gateway together with the mobile control apparatus and the flow control apparatus.   
     
     
         8 . A network system comprising:
 a base station;   a gateway;   a plurality of data transfer apparatuses for relaying data between the base station and the gateway; and   a path control unit that controls a communication path between the base station and the gateway, wherein   the path control unit is configured to perform path control using third identification information, and   the third identification information indicates the data transfer apparatus that is on a path between the base station and the gateway and is uniquely identified inside the network system.   
     
     
         9 . The network system according to  claim 8 , wherein
 the third identification information is set in such a manner that an arbitrary bit of an IP address is set as a bit for identifying the data transfer apparatus.   
     
     
         10 . The network system according to  claim 9 , wherein
 a plurality of IP addresses corresponding to a plurality of pieces of the third identification information that differs according to the passing data transfer apparatus are set to the base station and the gateway.   
     
     
         11 . A path control apparatus for controlling a communication path between a base station and a gateway, wherein
 the path control apparatus performs path control on a path between the base station and the gateway using second identification information, and   the second identification information is associated with first identification information for identifying a communication terminal that communicates with the base station and is uniquely identified inside the network system including the base station, the gateway, and the path control apparatus.   
     
     
         12 . The path control apparatus according to  claim 11 , wherein
 the second identification information is associated with the first identification information and a wireless parameter between the base station and the communication terminal.   
     
     
         13 . The path control apparatus according to  claim 11 , wherein
 the path control apparatus notifies the base station and the gateway of the first identification information and the second identification information and also notifies the data transfer apparatus that is disposed between the base station and the gateway of path control information of data to which the first identification information and the second identification information is set.   
     
     
         14 . The path control apparatus according to  claim 11 , wherein
 the path control apparatus is configured to include a mobile control apparatus for controlling the base station and the gateway and a flow control apparatus for controlling the data transfer apparatus that is disposed between the base station and the gateway.   
     
     
         15 . The path control apparatus according to  claim 14 , wherein the path control apparatus is configured to include:
 a serving gateway for, when incoming data that is addressed to the communication terminal is generated in a state where no wireless bearer is set between the communication terminal and the base station, holding the incoming data until the wireless bearer is set between the communication terminal and the base station, together with the mobile control apparatus and the flow control apparatus.   
     
     
         16 . A path control apparatus for controlling a communication path that is composed of a plurality of data transfer apparatuses for relaying data and is between a base station and a gateway, wherein
 the path control apparatus performs path control using third identification information, and   the third identification information indicates the data transfer apparatus which is on a path between the base station and the gateway and is uniquely identified inside the network system including the base station and the gateway.   
     
     
         17 . The path control apparatus according to  claim 16 , wherein
 the third identification information is set in such a manner that an arbitrary bit of an IP address is set as a bit for identifying the data transfer apparatus.   
     
     
         18 . A path control method for controlling a base station, a gateway, and a communication path between the base station and the gateway, the path control method comprising:
 performing path control on a path between the base station and the gateway using second identification information, wherein   the second identification information is associated with first identification information for identifying a communication terminal that communicates with the base station and is uniquely identified inside a network system including the base station and the gateway.   
     
     
         19 . A path control method for controlling a communication path that is composed of a plurality of data transfer apparatuses for relaying data and is between a base station and a gateway, the path control method comprising:
 performing path control on a path between the base station and the gateway using third identification information, wherein   the third identification information indicates the data transfer apparatus which is on a path between the base station and the gateway and is uniquely identified inside the network system including the base station and the gateway.   
     
     
         20 - 21 . (canceled)